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I MPRovBD AMALGAMATOR.'

' dille S-:inhale :durch t" inY time trttcrs lattnt :mt mating part nf tige same.

T0 ALL WHOM IT MAY CONCERN A Be it known that IQJ. 13. FoRIssIEn, of the city, county, and Stat-e of New York, have invented a new and improved Alnalgainator; and I do hereby declare that the' following is a full, clear, and exact description thereof, which will enable othersskilled in the art to malte and use the same, reference being had to the accompanying drawings forming a pa'rt of this specification, in which- Figure lis a vertical section of 'my improved amalgamat-or.

Figure 2 is u bottom view of one of the revolving pans therein arranged.

-Similar letters of reference indicate corresponding parts.

This invention relates to an amalgamating apparatus in which several bathsv o'f mercury are employed in order to obtain a'largc area of amalgamation. This object is obtained by arranging in an upright cylinder a series' of stationary annular. pans, between which a series of revolving annular pans is arranged, each of the pans containing mercury, and the water irith the orc falling from one pan to another. The water falls alteri -nately from the centre of thestationary pans and from the circumference of the revolving pans upon the pan,

below, thus passing in zigzag line from top to bottom of the apparatus, and comes in contactwi'th the wholesurface of thev mercury in each pan, thereby striking a larger area of mercury than is done by any apparatus -now made. The contents of the pans are well stirred by the use of rakes or stirrers arranged at the under side` of each pan.

A represents an upright cylindrical case, made of' cast iron, orany othersuitable material, and provided with'iianges for securing the heads, and for two doors at the sides, and'for the orice of the discharge near the bottom. At'tlieltop of this cylinder is firmlysecnred by bolts an annular plate, B, around the centre of which a circular' hopper, C, is either cast or bolted, as shown. At the bottom of the vessel A is secured a head, D, in any suitable manner.1 A block-step, a, is arranged in the centre of plate D, and afi-ame, E, on top of plate B, in which a.' vertical shaft, F, passing up through the centre of thevesscl A, is held. A bevcl-ivheel, h, on top of shaft F, meshing into a bevel-wheel, z', on the horizontal driving-shaft N, or any other kind of gearing or suitableA device, serves Ito impart rotary motion to the shaft F. To the latter, are within the `cylinder A, keyed or otherwise secured at suitable intervals, so as to revolve with the said shaft, circular pans G, made of suitable material, their diameter being smaller than that of the cylinder, so that the water may dow over their outer' edges. .These puns are provided with. sockets l, that fit around the shaft F, as shown. Between every two pans G are arranged. in the cylinder stationary annular pans H, which rest upon flanges or rings I, which are bolted or othcrnjise secured to thc'inside of the cylinder, as shown. These rings I are not completely circular, asth'at portion of each of them that is behind the side doors 7c k is cut away `to give access through these doors to the pans G, as well as to the pans H. The latter are 'open in the centre, so that the water can flow over .their inner edge into the revolving pans below, as is clcarly"shown in the drawing. To the under side of each of the pans G and H, aresecur'ed six, more or less, radial ribs byto each of which arepivoted stirrersLL, as ,shown in figs. 1 und 2. These stirrers consist of horizontal plates c, each pivoted at its ends to arms d, which nreivotedto the ribs'b, as shown. A toothed lever, e, is pivotedf to one of the arms d, and by placing it gver a pi1'1 'f, xed in the rib the depth ofthe .stirrer in the pan below may be regulated. The stirrers secured to the revolvingpans reach into the mercury in the stationary pans, and stir it up well, while the mercury in the revolving pansfstrikes against the strrers iirthe stationary .pans with the same effect, provided of course that the shaft F is revolving. Plugs z' z are secured in the bottom df each pan, so that 4byremoving them the mercury I nay bedrawn oli.V K K arc doors, placed over openings `,in the-side of the cylinders, to give access to the pans., yand are rmly held in place by means of screws g, Orothern'isc. VM is the discharge pipe, arranged .1 i

slightly above the bottom of the cylinder, so as not to carry off any mercury that may dow over the edge of the pans with the water. Y

The operation is as Tollens.: The pans G and H are almost. `lledvrith mercury, the shaft `F is revolved, amatcr contninin g thc oro'is poured into the hopper, and flows thence into thenppermost pan G, then over the-outer edgeof `that: int-o the panH` below, then over the inner edge of that, and so forth, in a zigzag line, thus coming in contact with the whole arcnkot mercury, while the stirrers serve to complet-e i tho amalgamation.

Having thus described lily invention, what I claim' as new, andwesire to seonm by Letters Patent, is

1. The 4arrangement of the circular revolving and annular stationary pans, the sumebeing'constructed us described, so that the Water containing the ore muy fall from topto bottom of tbc appuratus in u, zigzag line, lund be thus distributed over the whole surface of the mercury, us set forth. l

i 2. The"stirrers L', when secured to the undensides of'tllo pansG-.`and H, and when tllcy nre constructed tn d operated substantially as and .for the purpose herein shown and described.

3. An amalgamotor mudo and operating substantially as herein shown and described.

J. aromasm.

Witnesses:

ALEX. F. ROBERTS, A, M..T'ANNER. 

